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Researcher Releases PoC for Recent Java Cryptographic Vulnerability

Researcher Releases PoC for Recent Java Cryptographic Vulnerability
Apr 22, 2022
A proof-of-concept (PoC) code demonstrating a newly disclosed digital signature bypass vulnerability in Java has been shared online.  The  high-severity flaw  in question,  CVE-2022-21449  (CVSS score: 7.5), impacts the following versions of Java SE and Oracle GraalVM Enterprise Edition - Oracle Java SE: 7u331, 8u321, 11.0.14, 17.0.2, 18 Oracle GraalVM Enterprise Edition: 20.3.5, 21.3.1, 22.0.0.2 The issue resides in Java's implementation of the Elliptic Curve Digital Signature Algorithm ( ECDSA ), a  cryptographic mechanism  to  digitally sign  messages and data for verifying the authenticity and the integrity of the contents. In a nutshell, the cryptographic blunder — dubbed Psychic Signatures in Java — makes it possible to present a totally blank signature, which would still be perceived as valid by the vulnerable implementation. Successful exploitation of the flaw could permit an attacker to forge signatures and bypass authentication measures put in place. The PoC,

Get Lifetime Access to This 60-Hour Java Programming Training Bundle @ 97% Discount

Get Lifetime Access to This 60-Hour Java Programming Training Bundle @ 97% Discount
Apr 16, 2022
Java  is a very versatile programming language. From Android apps to Oracle databases, it can be used to power a wide range of software and systems. As with most  technical skills , the best way to learn Java is through building your own projects. But you can definitely speed things up with high-quality training. The Complete 2022 Java Coder Bundle  provides plenty of that — nine full-length video courses, in fact. The training comes from top-rated instructors, and you get plenty of hands-on projects to try. The included training is worth $1,791. But in a special deal for loyal readers of The Hacker News, you can pick up the bundle for just $39.99.  Special Offer — For a limited time, you can get unlimited lifetime access to over 60 hours of Java training for  just $39.99 . That's an unmissable deal! According to Indeed, the average salary for a Java developer in the US is around $115,000 a year. But even if you don't plan on becoming a specialist, learning Java is a smart move. T

CISA, FBI and NSA Publish Joint Advisory and Scanner for Log4j Vulnerabilities

CISA, FBI and NSA Publish Joint Advisory and Scanner for Log4j Vulnerabilities
Dec 23, 2021
Cybersecurity agencies from Australia, Canada, New Zealand, the U.K., and the U.S. on Wednesday released a joint advisory in response to widespread exploitation of multiple vulnerabilities in Apache's Log4j software library by nefarious adversaries. "These vulnerabilities, especially Log4Shell, are severe," the intelligence agencies said in the  new   guidance . "Sophisticated cyber threat actors are actively scanning networks to potentially exploit  Log4Shell ,  CVE-2021-45046 , and  CVE-2021-45105  in vulnerable systems. These vulnerabilities are likely to be exploited over an extended period." An attacker can exploit Log4Shell (CVE-2021-44228) by submitting a specially crafted request to a vulnerable system that causes that system to execute arbitrary code. CVE-2021-45046, on the other hand, allows for remote code execution in certain non-default configurations, while CVE-2021-45105 could be leveraged by a remote attacker to cause a denial-of-service (DoS

Extremely Critical Log4J Vulnerability Leaves Much of the Internet at Risk

Extremely Critical Log4J Vulnerability Leaves Much of the Internet at Risk
Dec 11, 2021
The Apache Software Foundation has released fixes to contain an  actively   exploited  zero-day vulnerability affecting the widely-used Apache Log4j Java-based logging library that could be weaponized to execute malicious code and allow a complete takeover of vulnerable systems. Tracked as  CVE-2021-44228  and by the monikers Log4Shell or LogJam, the issue concerns a case of unauthenticated, remote code execution (RCE) on any application that uses the open-source utility and affects versions Log4j 2.0-beta9 up to 2.14.1. The bug has scored a perfect 10 on 10 in the CVSS rating system, indicative of the severity of the issue. "An attacker who can control log messages or log message parameters can execute arbitrary code loaded from  LDAP  servers when message lookup substitution is enabled," the Apache Foundation  said  in an advisory. "From Log4j 2.15.0, this behavior has been disabled by default." Exploitation can be achieved by a single string of text, which c

Unpatched Python and Java Flaws Let Hackers Bypass Firewall Using FTP Injection

Unpatched Python and Java Flaws Let Hackers Bypass Firewall Using FTP Injection
Feb 21, 2017
This newly discovered bugs in Java and Python is a big deal today. The two popular programming languages, Java and Python, contain similar security flaws that can be exploited to send unauthorized emails and bypass any firewall defenses. And since both the flaws remain unpatched, hackers can take advantage to design potential cyber attack operations against critical networks and infrastructures. The unpatched flaws actually reside in the way Java and Python programming languages handle File Transfer Protocol (FTP) links, where they don't syntax-check the username parameter, which leads to, what researchers call, protocol injection flaw. Java/Python FTP Injection to Send Unauthorized SMTP Emails In a blog pos t published over the past week, security researcher Alexander Klink detailed the FTP protocol injection vulnerability in Java's XML eXternal Entity (XXE) that allows attackers to inject non-FTP malicious commands inside an FTP connection request. To demonst

Next Hacker to Organize Biggest Java Programming Competition In Germany

Next Hacker to Organize Biggest Java Programming Competition In Germany
Jan 16, 2016
Great news for Hackers and Bug-hunters who enjoy Programming and playing around with Software. A worldwide group of like-minded computer programmers is hosting The Next Hacker IPPC event on the 26th and 27th of February in Berlin, Germany, where participants can meet hackers and programmers from around the world while getting an opportunity to participate in one of the major hacking-related events in history. Yes, The Next Hacker is inviting Java programmers to participate in its International Programming Player Competition (IPPC) , which is going to be held on the second day of the event, i.e., 27th of February. The first day of 2016 IPPC event will offer technical sessions on programming, an open panel discussion with renowned hackers and programmers, as well as an opportunity for the world's top programmers to meet leading high-tech companies worldwide. The Next Hacker is an outstanding programming event with more than 5,000 attendees – no less than 3,000 c

These Top 10 Programming Languages Have Most Vulnerable Apps on the Internet

These Top 10 Programming Languages Have Most Vulnerable Apps on the Internet
Dec 04, 2015
A new research showed that Scripting languages, in general, give birth to more security vulnerabilities in web applications, which raised concerns over potential security bugs in millions of websites. The app security firm Veracode has released its State of Software Security: Focus on Application Development report ( PDF ), analyzing more than 200,000 separate applications from October 1, 2013, through March 31, 2015. The security researchers crawled popular web scripting languages including PHP, Java, JavaScript, Ruby, .NET, C and C++, Microsoft Classic ASP, Android, iOS, and COBOL, scanning hundreds of thousands of applications over the last 18 months. Also Read:  A Step-by-Step Guide — How to Install Free SSL Certificate On Your Website Researchers found that PHP – and less popular Web development languages Classic ASP and ColdFusion – are the riskiest programming languages for the Internet, while Java and .NET are the safest. Here's the Top 10 List:

Oracle releases 169 Updates, Including 19 Patches for JAVA Vulnerabilities

Oracle releases 169 Updates, Including 19 Patches for JAVA Vulnerabilities
Jan 21, 2015
Get Ready to update your Java program as Oracle has released its massive patch package for multiple security vulnerabilities in its software. The United States software maker Oracle releases its security updates every three months on Tuesday, which it referred to as " Critical Patch Updates " (CPU). Yesterday, Oracle released its first quarterly CPU-date of this year, issuing a total of 169 security fixes for hundreds of its products including Java, Fusion Middleware, Enterprise Manager and MySQL. The security update for Oracle's popular browser plug-in Java addresses vulnerabilities in the software, 14 of which could be remotely exploitable without authentication, that means an attacker wouldn't need a username and password to exploit them over a network. Four Java flaws were marked most severe and received a score of 10.0 on the Common Vulnerability Scoring System (CVSS) , the most critical ranking. Nine other Java flaws given a CVSS Base Score of 6.0

Growing market of zero-day vulnerability exploits pose real threat to Cyber Security

Growing market of zero-day vulnerability exploits pose real threat to Cyber Security
Dec 08, 2013
NSS Labs issued the report titled " The Known Unknowns " to explain the dynamics behind the market of zero-day exploits. Last week I discussed about the necessity to define a model for " cyber conflict " to qualify the principal issues related to the use of cyber tools and cyber weapons in an Information Warfare context, today I decided to give more info to the readers on cyber arsenals of governments. Governments consider the use of cyber weapons as a coadiuvant to conventional weapons, these malicious application could be used for sabotage or for cyber espionage, they could be used to hit a specifically designed software (e.g. SCADA within a critical infrastructure ) or they could be used for large scale operations infecting thousand of machines exploiting zero-day in common application ( e.g. Java platform, Adobe software ). The zero-day flaw are the most important component for the design of an efficient cyber weapon, governments have recently created dedic

Warning : Java 6 vulnerable to zero-day exploit; added to Neutrino exploit kit

Warning : Java 6 vulnerable to zero-day exploit; added to Neutrino exploit kit
Aug 28, 2013
Hackers are using a new exploit for a bug in the out-of-date but popular Java 6 platform to attack victims, and has been added to a commercially available Neutrino exploit kit. The use of Java 6 still is prevalent, opening up a significant number of users to the threat. F-secure analyst Timo Hirvonen warned about the exploit over Twitter, advising that he had found an exploit in the wild actively targeting an unpatched vulnerability in Java 6, named CVE-2013-2463 . The exploit's proof-of-concept was made public last week, prior to in-the-wild attacks surfacing on Monday. Oracle is aware of the hole but, since Java 6 is no longer supported, the company will not patch the issue. The vulnerability lies in Java Runtime Environment's 2D sub-component, which is used to make two-dimensional graphics. Because no patch is available, the exploits provides cybercriminals and other attackers an effective vehicle to launch attacks targeting users and organizations using Jav

Java based cross platform malware found in wild

Java based cross platform malware found in wild
Aug 02, 2013
Other than Windows, Now other platforms are becoming more popular every day and attracting bad guys who are starting to create malicious code for other systems.  Java applications can run on multiple platforms with ease, thus no surprise that malicious code written in Java that is designed to target more than one operating system are becoming increasingly common. Researchers at McAfee Labs spotted another sample of Java based trojan dubbed as JV/BackDoor-FAZY  that opens a back door for an attacker to execute commands and acts as a bot after infection. According to researcher, The key to decrypt the config file was encrypted with Base 64, Triple-DES algorithm and Hex. Decrypting the file provides information about the backdoor connection, includes IP address, port number, operating system, mutex information, and password for the connection. " On execution, the JAR file opens the backdoor connection to the IP address and the port mentioned in the plain config

Unfixed Reflection API vulnerability reported in Java

Unfixed Reflection API vulnerability reported in Java
Apr 23, 2013
Founder and CEO of Security Explorations of Poland,  Adam Gowdiak has reported a new unpatched security vulnerability in JAVA that affects all Java versions, including 7u21 released last Tuesday. Gowdiak claims to have sent to Oracle a report about a reflection API vulnerability in the newly shipped Server Java Runtime Environment (JRE), notifying them of the new security weakness. " It can be used to achieve a complete Java security sandbox bypass on a target system ," Vulnerability allows attackers to completely bypass the language's sandbox to access the underlying system. Gowdiak has not published any further details about the vulnerability in order to give Oracle time to patch the problem. Last week's Oracle patch update repaired many issues plaguing the platform. Java 7 Update 21 contains 42 new security fixes for Oracle Java SE. A majority of these flaws are browse-to–a-hacked-site-and-get-infected vulnerabilities. According to Oracle, " 39 of these

Hunting Russian malware author behind Phoenix Exploit Kit

Hunting Russian malware author behind Phoenix Exploit Kit
Apr 08, 2013
Exploit kits are one of the dangerous cyber crime tool, where The Phoenix Exploit Kit is a good example of exploit packs used to exploit vulnerable software on the computers of unsuspecting Internet users. The Phoenix Exploit Kit is available for a base price of $2,200 in underground market by its malware author or developer.  Like other exploit kits , Phoenix also developed to exploit browser-based  vulnerabilities in outdated and insecure versions of browser plugins like Java, and Adobe Flash and Reader. Developer of Phoenix is known by nickname AlexUdakov on several forums. According to new investigation report published by  krebsonsecurity , AlexUdakov was also member of a forum called Darkode , whose administrator accounts were compromised few weeks before and that the intruders were able to gain access to private communications of the administrators.  Intruders was able to view full profiles and database of Darkode members, as well as the private email addres

Java enabled browsers are highly vulnerable

Java enabled browsers are highly vulnerable
Mar 27, 2013
Oracle has released emergency patches multiple of times in recent months for Java for one after another set of vulnerabilities . About 100 million computers reported to be vulnerable to unauthorized access via different flaw in Java software. Department of Homeland Security's US-CERT already warned users to disable Java permanently to stop hackers from taking control of users' machines. Security experts advised,'T he best defense we have right now for these kinds of attacks is to disable Java in the browser forever' . According to Websense experts, Most browser installations use outdated versions of the Java plug-in that are vulnerable to at least one of several exploits used in popular web attack toolkit. Exploit kits are a very common tool for distribution of many Java-based threats. To detect the vulnerable Java versions that are installed on systems and Websense experts, used their technology via ' threat intelligence network' , which monitors bi

Chrome, Firefox, Java, IE10 exploited at Pwn2Own competition

Chrome, Firefox, Java, IE10 exploited at Pwn2Own competition
Mar 07, 2013
During the first day of Pwn2Own competition at the CanSecWest conference in Vancouver , latest versions of all major browsers were exploited by hackers.  Chrome, Firefox and Internet Explorer 10 on Windows 8 were successfully pwned by various competitors, bringing them tens of thousands of dollars in prizes.  French vulnerability research and bug selling firm ' Vupen ' brought down IE10 running on a Windows 8 powered Surface Pro tablet by exploiting a pair of flaws. Researchers Jon Butler and Nils from MWR Labs managed to exploit Google Chrome on Windows 7 and also used a kernel bug to bypass the sandbox. " By visiting a malicious webpage, it was possible to exploit a vulnerability which allowed us to gain code execution in the context of the sandboxed renderer process. We also used a kernel vulnerability in the underlying operating system in order to gain elevated privileges and to execute arbitrary commands outside of the sandbox with system privi

Another Java zero-day vulnerability being exploited in the wild

Another Java zero-day vulnerability being exploited in the wild
Mar 02, 2013
Do you still have Java installed? There is a bad news for you ! FireEye has detected yet another Java zero-day vulnerability being exploited in attacks in the wild. The vulnerability targets browsers that have the latest version of the Java plugin installed Java v1.6 Update 41 and Java v1.7 Update 15 and  FireEye warned that the   vulnerability is being exploited to install a remote-access trojan dubbed McRat , researchers from security firm. " Not like other popular Java vulnerabilities in which security manager can be disabled easily, this vulnerability leads to arbitrary memory read and write in JVM process," "After triggering the vulnerability, exploit is looking for the memory which holds JVM internal data structure like if security manager is enabled or not, and then overwrites the chunk of memory as zero. " The exploit is reportedly different from the one used to attack Facebook, Twitter, Apple, and several other companies last mont

Java zero-day exploit sold in underground Market

Java zero-day exploit sold in underground Market
Nov 28, 2012
Once again a zero day vulnerability exploit is sold by cyber criminals in the underground, once again a the flaw is related to Oracle's Java software that could allow to gain remote control over victim's machine. The news has been reported by KrebsOnSecurity blog that announced that the exploit being sold on an Underweb forum. The vulnerability is related to the most recent version of Java JRE 7 Update 9, it isn't present in previous versions of the framework, in particular the bug resides within the Java class "MidiDevice according the info provided by the seller that describes it with following statements: " Code execution is very reliable, worked on all 7 version I tested with Firefox and MSIE on Windows 7 ," " I will only sell this ONE TIME and I leave no guarantee that it will not be patched so use it quickly. " The exploited class is a component of Java that handles audio input and output. It's easy to understand that similar vulnerability has a great value du
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